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All results from a given calculation for CHBr (bromomethylene)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
2 1 yes CS 3A"

State 1 (1A')

Jump to S2C1
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-2599.672780
Energy at 298.15K-2599.675464
HF Energy-2599.672780
Nuclear repulsion energy66.274653
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBE/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 2633 2609 138.79      
2 A' 1167 1156 9.70      
3 A' 607 601 55.91      

Unscaled Zero Point Vibrational Energy (zpe) 2203.5 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 2183.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBE/3-21G
ABC
14.22288 0.37607 0.36638

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.027 1.653 0.000
Br2 0.027 -0.335 0.000
H3 -1.111 1.813 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.98821.1489
Br21.98822.4309
H31.14892.4309

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 98.002
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.347      
2 Br 0.148      
3 H 0.198      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.520 -0.664 0.000 1.659
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.330 -2.951 0.000
y -2.951 -25.938 0.000
z 0.000 0.000 -23.669
Traceless
 xyz
x -0.526 -2.951 0.000
y -2.951 -1.438 0.000
z 0.000 0.000 1.964
Polar
3z2-r23.929
x2-y20.608
xy-2.951
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.192 -0.435 0.000
y -0.435 6.094 0.000
z 0.000 0.000 1.549


<r2> (average value of r2) Å2
<r2> 40.480
(<r2>)1/2 6.362

State 2 (3A")

Jump to S1C1
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-2599.671340
Energy at 298.15K-2599.674007
HF Energy-2599.671340
Nuclear repulsion energy68.505574
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBE/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3096 3068 5.84      
2 A' 872 864 3.92      
3 A' 673 667 29.07      

Unscaled Zero Point Vibrational Energy (zpe) 2320.4 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 2299.3 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBE/3-21G
ABC
23.82058 0.39589 0.38942

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.563 0.000
Br2 0.021 -0.331 0.000
H3 -0.878 2.191 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.89341.0971
Br21.89342.6768
H31.09712.6768

picture of bromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.443      
2 Br 0.202      
3 H 0.241      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.940 -0.032 0.000 0.940
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.022 -1.981 0.000
y -1.981 -22.428 0.000
z 0.000 0.000 -25.294
Traceless
 xyz
x -0.160 -1.981 0.000
y -1.981 2.230 0.000
z 0.000 0.000 -2.069
Polar
3z2-r2-4.139
x2-y2-1.593
xy-1.981
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.577 -0.223 0.000
y -0.223 5.480 0.000
z 0.000 0.000 1.068


<r2> (average value of r2) Å2
<r2> 39.004
(<r2>)1/2 6.245